Xerox Phaser 6130 Service Manual page 71

Phaser 6130 Color Laser Printer Service Manual
Lead Edge Registration
When a sheet is fed from the Tray to the toner transfer position, the
registration of the sheet may not be correctly maintained due to misalignment
of lead edges in the tray.
To avoid this problem, the lead edge position needs to be aligned at the
Registration rollers before the sheet is fed in front of the Transfer Unit Belt, or
in front of the BTRs.
Before the Registration rollers are energized, the paper is advanced from the
tray to the rollers. This process aligns the leading edge as shown below.
By pushing the edge of the sheet against the Registration Roller that is not
turning, the lead edge of the sheet is registered.
Registration Rollers
Skewed Paper
Paper Size Control
The printer doesn't have switches for detecting paper size, and the length of
paper is detected only by the Registration Sensor when feeding paper. If
printing data and paper size don't match, an error is sent to the Image
Processor board.
Theory of Operation
Registration Rollers
s6130-017
s6180-271
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